Evidence map›Paper›PMID 41991686›Full record

ArticleNature aging2026

p21

Ivan A Salladay-Perez, Itzetl Avila, Lizeth Estrada, Andreea C Alexandru, Cristian Ponce, Anika Dhingra, Grasiela Torres, Christina Y Deng, Ronak Hegde, Julia Gensheimer and 29 more

Abstract read
In one paragraph

Article in Nature aging, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Aqueous Extract ofPharmaceuticals (Basel, Switzerland) · 2026
    Article
  2. Article
  3. The immunology behind inflammaging-causes, sources, and mechanisms.The Journal of allergy and clinical immunology · 2026
    Review
  4. Article
  5. Article
  6. What Do We Know About Immune System Aging from Human and Animal Studies?International journal of molecular sciences · 2026
    Review
  7. Review
  8. Article
  9. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

39 authors.

Ivan A Salladay-PerezDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Itzetl AvilaDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Lizeth EstradaDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0009-0004-3344-385X
Andreea C AlexandruBuck Institute for Research on Aging, Novato, CA, USA.
Cristian PonceDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0009-0009-9399-8925
Anika DhingraDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Grasiela TorresDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Christina Y DengDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0009-0000-9141-8899
Ronak HegdeDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Julia GensheimerMolecular Biology Institute at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0001-6579-9579
Abhijit KaleBuck Institute for Research on Aging, Novato, CA, USA.
Indra HeckenbachCenter for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0001-7038-4677
Simon HuiDepartment of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Chantle EdillorDepartment of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Jose A SotoMolecular Biology Institute at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0002-2246-8961
Alexander J NapiorMolecular Biology Institute at UCLA, Los Angeles, CA, USA.
Isaiah LittleMolecular Biology Institute at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0002-3073-553X
Mark LarsenMolecular Biology Institute at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0002-2800-3487
Jacob RoseBuck Institute for Research on Aging, Novato, CA, USA.ORCID http://orcid.org/0000-0002-7819-4605
Lia FarahiDepartment of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Edwin D J Lopez GonzalezDepartment of Diabetes & Cancer Metabolism, Beckman Research Institute of City of Hope, Duarte, CA, USA.
Matthew R KriegerDepartment of Chemistry and Biochemistry at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0009-0003-9957-0969
Kushan ChowdhuryDepartment of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Mridul SharmaDepartment of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Yuming JiangDepartment of Computational Biomedicine, Cedars Sinai Medical Center, Los Angeles, CA, USA.
Kevin WilliamsDepartment of Biological Chemistry, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Morten Scheibye-KnudsenCenter for Healthy Aging, Department of Cellular and Molecular Medicine, University of Copenhagen, Copenhagen, Denmark.ORCID http://orcid.org/0000-0002-6637-1280
Carla M KoehlerMolecular Biology Institute at UCLA, Los Angeles, CA, USA.
Jesse G MeyerDepartment of Computational Biomedicine, Cedars Sinai Medical Center, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0003-2753-3926
Julia J MackMolecular Biology Institute at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0002-9239-8436
Charles BrennerDepartment of Diabetes & Cancer Metabolism, Beckman Research Institute of City of Hope, Duarte, CA, USA.ORCID http://orcid.org/0000-0002-4955-3226
Steven J BensingerDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
Cyril LaggerLaboratory for Mechanistic Learning of Ageing Biology, Computer Science Department, Kyiv School of Economics, Kyiv, Ukraine.
João Pedro de MagalhãesGenomics of Ageing and Rejuvenation Lab, Department of Inflammation and Ageing, College of Medicine and Health, University of Birmingham, Birmingham, UK.ORCID http://orcid.org/0000-0002-6363-2465
Birgit SchillingBuck Institute for Research on Aging, Novato, CA, USA.ORCID http://orcid.org/0000-0001-9907-2749
Rajat SinghDepartment of Medicine, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0001-9389-8574
Eric VerdinBuck Institute for Research on Aging, Novato, CA, USA.ORCID http://orcid.org/0000-0003-3703-3183
Aldons J LusisDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.ORCID http://orcid.org/0000-0001-9013-0228
Anthony J CovarrubiasDepartment of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA. AJCovarrubias@mednet.ucla.edu.ORCID http://orcid.org/0000-0002-7884-652X

Funding

Transgenic & Knock-out MouseP30DK063491 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MILES Frome WILKINSON · 2003 to 2026
$40.4M
UCLA-Caltech Medical Scientist Training ProgramT32GM008042 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI AJIJOLA, OLUJIMI A, DAWSON, DAVID WAYNE · 1985 to 2023
$29.9M
TUMOR CELL SURFACES AND CHROMOSOMEST32CA009056 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Gay M Crooks, David A. Nathanson · 1985 to 2026
$10.5M
UCLA-Caltech Medical Scientist Training ProgramT32GM152342 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Olujimi A Ajijola, David Wayne Dawson · 2024 to 2026
$5.3M
Research Training in Cell and Molecular BiologyT32GM145388 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Jorge Torres · 2022 to 2026
$5.2M
Democratizing Multi-Omics to Expedite Discovery of Hidden Metabolic PathwaysR35GM142502 · NIGMS · MEDICAL COLLEGE OF WISCONSIN · PI MEYER, JESSE · 2021 to 2025
$2.2M
American Federation for Aging Research (American Federation for Aging Research, Inc.) 20225528American Heart Association (American Heart Association, Inc.) 19CDA34760007U.S. Department of Health & Human Services | NIH | National Cancer Institute (NCI) T32CA009056U.S. Department of Health & Human Services | NIH | National Center for Research Resources (NCRR) 1S10 OD016281U.S. Department of Health & Human Services | NIH | National Institute of Allergy and Infectious Diseases (NIAID) 2T32AI007323-31U.S. Department of Health & Human Services | NIH | National Institute of Diabetes and Digestive and Kidney Diseases (National Institute of Diabetes & Digestive & Kidney Diseases) DK117850U.S. Department of Health & Human Services | NIH | National Institute of Diabetes and Digestive and Kidney Diseases (National Institute of Diabetes & Digestive & Kidney Diseases) P30DK063491U.S. Department of Health & Human Services | NIH | National Institute of Diabetes and Digestive and Kidney Diseases (National Institute of Diabetes & Digestive & Kidney Diseases) U24DK132746-01U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) 1R35GM156893-01U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) GM037981U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) GM61721U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) R35GM142502U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) T32GM008042U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) T32GM145388U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) T32GM152342
6 · The paper itself

Abstract

Cellular senescence drives chronic sterile inflammation during aging via the senescence-associated secretory phenotype, yet the senescent cell types responsible are poorly defined. Macrophages share multiple features of senescence, including inflammatory secretion, yet whether macrophages can adopt a senescent state remains unclear. Here we identify p21⁺Trem2⁺ senescent macrophages as a major source of inflammaging, using primary mouse and human macrophage models of DNA damage and cholesterol-induced senescence characterized by multi-omic profiling. We found that senescent macrophages exhibit a distinctive p21-TREM2 expression profile and senescence-associated secretory phenotype, driven in part by type I interferon signaling via cytosolic mitochondrial DNA. We also found that senescent macrophage accumulation occurs in aging, metabolic dysfunction-associated steatotic liver disease mouse livers, and is enriched in human cirrhotic liver tissue. Finally, senolytic treatment targeting senescent macrophages reduced liver inflammation and steatosis in both aged mice and mice with metabolic dysfunction-associated steatotic liver disease. These findings establish macrophage senescence as a central driver of chronic inflammation in aging and metabolic liver disease, and a tractable therapeutic target.

Indexed as

AgingCellular SenescenceCyclin-Dependent Kinase Inhibitor p21Fatty LiverInflammationMacrophagesMembrane GlycoproteinsAnimalsHumansLiverMaleMiceMice, Inbred C57BLSenotherapeuticsCyclin-Dependent Kinase Inhibitor p21Membrane GlycoproteinsSenotherapeutics

Identifiers

PMID41991686
PMCPMC13099426

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.